Porifera and Cnidaria Notes pt.2

Porifera and Cnidaria Notes pt.2

Multicellular and Tissue Organization

Open Ended

Watch the video on Cnidaria, and answer the following 5 questions.

1. What 2 structures of the digestive system did Cnidarians develop that we take for granted today?

2. What 2 things were inherited from Cnidarians that allow all animals to move?

3. How do Cnidarians capture their prey?

4. What were the first animals to swim in the ocean?

5. What is the longest animal in the world?

Multiple Choice

All animals belong to Domain __________.

• Animalia

• Eukarya.

• Probiotica.

• Plantae.

Multiple Choice

All animals in phylum Cnidaria demonstrate _____________.

• radial symmetry

• asymmetry

• bilateral symmetry

• pretty symmetry

Multiple Choice

All jellyfish belong to phylum ____________.

• Cnidaria

• Hydrozoa

• Anthozoa

• Scyphozoa

Multiple Choice

Cnidarians are named after __________, the stinging cells found in their tentacles.

• cnidocytes

• cnidocils

• nematocysts

• cniliocysts

Multiple Choice

In Cnidarians, where does digestion occur?

• spongocoel

• nematocyst

• gastrovascular cavity

• tentacles

Multiple Choice

A jellyfish is covered in an outer layer of cells called the epidermis. Within the epidermis is the ____________, which is the jelly-like interior of the animal.

• mesoglea

• rhopalium

• brachial tentacle

• manubrium

Multiple Choice

When the _________ is triggered, the operculum opens on the cnidocyte.

• cnidocil

• barb

• nematocyst

• cnidocyte

Multiple Choice

How many cell layers (body walls) do jelly fish have?

• 1

• 2

• 3

• 4

Multiple Choice

Name this body type.

• Medusa

• Polyp

Multiple Choice

Name this body type.

• Medusa

• Polyp

Multiple Choice

Term for an animal that is attached and not free-swimming.

• planted

• sessile

• motile

• amorphous

Multiple Choice

What type of asexual reproduction is shown here?

• Gemmules

• Fragmentation

• Budding

• Sexual reproduction

Multiple Choice

What term describes a life cycle that alternates between two forms, such as the medusa and polyp?

• generational life cycle

• alternation of life cycle

• alternation of generations

• changing life forms

Multiple Choice

How are nervous responses in cnidarians controlled?

• by their gastrovascular cavity

• through the mesoglea

• by the nerve net

• through the filaments in their nematocysts

Multiple Choice

How do cnidarians reproduce?

• only sexually

• only asexually

• both sexually and asexually

• genetically reproduced in labs

Multiple Choice

Free swimming, umbrella shaped body with tentacles that hang down.

• Polyp

• Medusa

Multiple Choice

The larval (or baby) form of a Cnidarian is called the _______.

• planula

• plantae

• kingdom

• baby jelly

Multiple Choice

Sessile, tube shaped body form of cnidarians such as corals and hydra.

• Polyp

• Medusa

Multiple Choice

Corals and anemones are part of Class __________

• Anthozoa

• Hydrozoa

• Scyphozoa

• Cubozoa

Multiple Choice

"Box jellyfish" belong to Class _____________.

• Cubozoa

• Hydrozoa

• Anthozoa

• Scyphozoa

Multiple Choice

"True jellyfish" belong to Class _________.

• Scyphozoa

• Anthozoa

• Hydrozoa

• Cubozoa

Multiple Choice

What surrounds the mouth of Cnidarians?

• guard cells
• pinococytes
• tentacles
• spines

Multiple Choice

Members of the Cnidarian Class _______ include sea anemones and coral.

• Anthozoa
• Cubozoa
• Hydrozoa
• Scyphozoa

Multiple Choice

What type of cnidarian is pictured?

• hydra

• coral

• jellyfish

• sea anemone

Multiple Choice

What type of cnidarian is pictured?

• Jellyfish

• hydra

• sea anemone

• coral